31 A more recent study from the Diabetic center in Jaffna was undertaken in 8401 diabetic patients and using the SWM and biothesiometer
, established a DPN prevalence of 34.
VPT was measured with a biothesiometer
- Vibrometer-VPT[R] (Diabetic Foot Care, Madras Engineering Service, India) in a standardized fashion by a single observer.
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was used to determine her vibration perception threshold.
Diagnosis of peripheral neuropathy was made on the basis of history, clinical examination, vibration perception with the help of biothesiometer
Vibration sensory testing was conducted using the Biothesiometer
(Biomedical, Newbury, Ohio).
Therefore, this study was planned to evaluate the usefulness of the above modalities with the standard well validated screening method of measuring vibration perception threshold (VPT) with a biothesiometer
in a population where foot care practices are scantly followed.
We assessed sensory status using a biothesiometer
(Bio-Medical Instrument Company, Newbury, Ohio) and by applying a Semmes-Weinstein 10 g monofilament (Touch-Test Sensory Evaluator, North Coast Medical, Inc, Morgan Hill, California) to the plantar surface of the foot.
Vibration perception threshold (VPT) at the great toes was measured with a Biothesiometer
(Bio-Medical Instrument Company, Newbury, Ohio, USA) .
was 90% sensitive and 85% specific at a cut-off of 25 volts.
Neuropathy was evaluated by history and of clinical examination using 10 g monofilament, vibration sense by biothesiometer
(VPT at great toe >25 mV were considered significant) and ankle reflex (19).
(Biomedical Instruments, Newbury, OH); in UK--Neurothesiometer (Horwell, London), in RF--Vibrotester --MBN BT-02-1 (MBN, Moscow).